Sewing-machine attachment.



W. G. DUNHAM.

SEWING MACHINE ATTACHMENT. APPLICATION FILED FEB. 16, 19111 1,029,917, `Patented June 18,1912.

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SEWING MACHINE ATTACHMENT.

COLUMBIA PLANOGRAPH CD.. WASHINGTON. D. C.

W. G. DUNHAM. SEWING MACHINE ATTACHMENT.

APPLICATION FILED FEB. 16, 1911. 1,029,917, Patented June 18,1912.

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Patented June 18, 1912.

W. G. DUNHAM. SEWING MACHINE ATTACHMENT. APPLICATION FILED :23.16, 1911.

COLUMBIA PLANDGRAPH CO..WASMINGTON. n. c,

cular arrangement WILLIAM '.DUNI-IAM, OIE* EAST LANSDOWNE, PENNSYLVANIA.

SEWING-MACHINE ATTACHMENT.

Speciication of Letters Patent. Application filed February 416, 1911.

Patented June 18, 1912. Serial No. 608,968.

To all wiz-0m t may concern.'

Be it known that I, WILLIAM G. DUN- HAM, a British subject, residing at East Lansdowne, in the county of Delaware andy State of Pennsylvania, have invented a certain Sewing-Machine Attachment, of which the following is a specification.

My invention is a `sewing machine attachment designed to coperate with stitching mechanism for 4the purpose of securing hooks and eyes, buttons and the like in ciron cards.

The characteristic features of my invention are fully disclosed in the following description and the accompanying drawings in illustration thereof.

In the drawings, Figure 1 is a front elevation of a sewing machine having my attachment applied thereto; Fig. 2 is a top plan and part sectional view taken on the line 2-2 of Fig. 1; Fig. 3 is an end elevation of the mechanism shown in Fig. 1; Fig. 4 is a sectional view taken on the line 4-4 of Fig. 1; Fig. 5 is a plan view of the body of the holder having hooks and eyes placed in seats thereof; Fig. 6 is a sectional view taken on the line 6*(5 of Fig. 5 representing the body of the holdei having a retaining disk applied thereto with a card together with hooks and eyes clamped be tween them; Fig. 7 is a plan view of a card having hooks and eyes sewed thereon in accordance with my invention; Fig. 8 is a plan view of the retaining disk, and Fig. 9 is a sectional view illustrating details of the clutching mechanism.

The attachment is applicable to a usual type of sewing machine comprising the bed 1 and the arm 2 containing the revoluble driving shaft 8 which reciprocates the needle bar 4 through conventional connections 5 and 6, the bar carrying the needles 7 which coperate with the conventional shuttlemechanism S beneath the bed.

y improvements comprise a holder having a circular body 9 provided with a central journal bearing 9EL and concentric there` with a circular rack 9b, a circular flange 9, circular 4through slotsV 91 and radially dis-- posed seats 9e and 9f, the journal bearing comprising the hub 9g and the periphery of the body having a lug 9h thereon. The seats 9e receive the hooks 10 and eyes 10 and the seats 9t receive the eyes 10, upon which a circular card 11 is placed, within the seat provided by the liange 9C, and a retaining placed on the card within the the disk containing the through registering with t-he respective 4to rock on the fulcrum 13d and carries an arbor 15a movable through the bearings 13b and 9a, whereby the holder body 9 can be journaled, the arbor being withdrawn for the insertion and removal of the holder by depressing the outer arm of the lever against the action of the spring 15b which normally holds the arbor in the bearings.

Brackets 1G, having studs 16a and guides 16b thereon, are fixed to the base 1 by bolts 16c which pass through the base slots 1b, by which the brackets can be adjusted radially with respect to the arbor 15a. Plunger blocks 16d are adapted to reciprocate in the ways formed by the guides 1Gb, radially with respect to the arbor 15a; the blocks being thrust toward the arbor by the springs 16e disposed between them and the studs 16aand serving as guides for centering and brakes for holding the body 9, against the Iperiphery of which they are adapted to ear.

The holder, being engaged by the arbor, is revolved by the reciprocating pawl 17 which engages the rack or ratchet teeth 9b and is carried by an arbo-r 17- Apassing through a block 17h, the latter reciprocating in a way 17C of a bracket 17 d. The bracket is fixed to the bed 1 by a bolt 17e passing through the slot 1C thereof, by which the position of the bracket can be adjusted to adjust the position of the pawl as may be required by the diameter of the racks of the dilferentholders which may be used. The block 17h is reoiprocated by a pitman rod 18 which connects the arbor 17 with the pin 18a of a crank 18b carried by a shaft 18", the shaft being revoluble in and longitudinally movable through the adjustable bearings 1d carried by the bed 1 to compensate for the adjustment of the bracket 17d. The shaft 18 is movable through and revolved by a pinion 19 having a key 19EL thereon which engages a longitudinal groove 18d in `the shaft; the pinion 19 is revolved by an idler pinion 19b journaled on a stud 19C of the bracket 19*1 carried by the arm 2, and the idler is revolved by a pinion 19e having a collar 19f fixed on the shaft 3. The shaft 3 is revolved by a belt wheel 20, normally loose thereon and clutched thereto by a bolt 21 movable longitudinally in a groove 19g of the collar 19t and pinion 19, into and out of engagement with recesses 20a in the face of the wheel 20, the bolt being thrown into engagement by a spring 21a placed behind it in the groove 19g. The bolt 21 is drawn back to disengage the wheel- 20, by a lever 22 having the fulcrum 22 on the arm 22b which is iiXed to the arm 2, the lever having the wedge shaped end 22c which engages the lug 21b on the bolt. rIhe rod 22d, having the pivoted connection 22e with the lever 22, passes through the bearing 19 of the bracket 191 and is elevated, to elevate the lever, by a spring 22t which engages the collar 22g liXed on the rod and is supported by the bearing 19 through which the rod moves. The rod 221 is drawn down, to disengage the lever 22 from the bolt 21, by a crank lever having the fulcrum 22h and comprising the arm 22j having the pivoted connection 22k with the rod and the arm 22m having the pivoted connection 22n with a rod 22p, the latter having the pivoted connection 221 with the lever 22r adapted to rock on the fulcrum 22S. To hold down the rod 22d, a cam 23 is iXed thereon and a crank lever, fulcrumed on the bearing 23, has its arm 23b provided with the tooth 23 adapted to engage the cam, the tooth being held in engagement by a spring 2?d connected with the arm 23b and the base 1. To automatically disengage the rod 221, the arm 23e has the pivoted connection 23f with the lever 24: which is adapted to rock on the fulcrum 24a and to be rocked by the engagement of the lug 9h of the revolving holder with the inclined surface 24h of its arm 24C.

In operation, the holder body 9, with the hooks and eyes engaged on the card therein, is placed in position by depressing the lever 15 and elevating the arbor 15a, the holder being placed so that the ends 9 of the circular slots 9d are beneath the needles 7 and engaged by releasing the lever whereupon the arbor is thrown automatically into the bearing 9a. The lever 22 is drawn down by means of the lever 22" through the intermediate mechanism, the cam 23 moving past the pawl 23C which then acts automatically to hold the lever' 22 down. The bolt 21, being thus released, is thrown by the spring 21a into engagement with the revolving wheel 2O and the shaft 3 is revolved, acting through the intermediate mechanism dcscribed to reciprocate the needles 7 and revolve the holder in unison. Then the holder has revolved until the ends 9 of the slots 9d reach the needles, the lug 9h strikes the surface 24@b of the lever 24, which elevates the arm 23h and releases the rod 22", upon which the lever 22 is elevated by the action of the spring 22E and the bolt 21 is drawn back. The shaft 3 being thus disengaged from the driving wheel, the operation is stopped and the holder, with the hooks and eyes sewed to the card, can be withdrawn upon depressing the lever 15 and elevating the arbor 15a.

Having described my invent-ion, I claim:

1. In a sewing machine, a revoluble holder comprising a pair of engaging members having a circular slot therein, in combination with a reciprocating needle adapted to act in said slot.

2. In a sewing machine, a revoluble card holder having one or more circular slots therein and said holder comprising a detachable disk, in combination with sewing mechanism comprising one or more needles adapted for registration with said slot or slots and sewing through said card.

3. In a sewing machine,a revoluble holder having a circular slot therein and means for clamping articles in engagement with a support therefor, in combination with mechanism for revolving said holder, sewing mechanism adapted for stitching said articles to said support, and means for operating said mechanisms in unison.

L1. In a sewing machine, a revoluble holder provided with circular slots, seats for holding articles, and means for engaging a card in conjunction with said articles, in combination with sewing mechanism comprising needles adapted to act in said slots whereby said card and articles are sewed together.

5. In a sewing machine, a holder having a circular slot and a journal bearing, a movable arbor adapted to engage said bearing,

'and means whereby said arbor can be inserted and withdrawn, Ain combination with means for revolving said holder and means for stitching together articles carried by said holder.

G. In a sewing machine, a bed having an arm thereon, a longitudinally movable arbor carried by and movable through said arm, a holder journaled on said arbor and adapted for clamping articles to be sewed together, means comprising a pawl and ratchet for revolving said holder, and sewing mechanism adapted for stitching said articles,

7. In a sewing machine, a bed, a bearing fixed thereto, a longitudinally movable arbor carried by said bearing, a lever for moving said arbor, a holder journaled on said arbor, means for revolving said holder, sewing mechanism cooperating with said holder for stitching articles held thereon,

and trip mechanism operated by said holder said holder and sewing mechanism.

S. In a sewing machine, arevoluble holder having one-or more circular slots therein and a rack thereon, sewing mechanism comprising one or more needles adapted to act through said slot or slots, a pawl adapted for engaging' said rack to rotate said holder, a reciprocating arbor for carrying said pawl, a revoluble shaft, means whereby said shaft is connected with and recip'rocates said arbor, driving mechanism, and means whereby said driving mechanism operates said shaft.

9. In a sewing machine, a revoluble holder having a circular slot therein and av rack thereon, sewing mechanism comprising a needle adapted to act in said slot, a pawl adapted for engaging said rack, a reciprocating arborpwhich carries said pawl, a revoluble shaft, a crank and pitman said shaft reciprocates said arbor, driving mechanism, a train of gears for connecting said driving mechanism with said shaft, means for clutching and unclutching said gears with relation to said driving mechanism, and automatically operating mechanism for disengaging said clutching means.

l0. In a sewing machine, a revoluble holder having one or more circular slots therein, sewing mechanism comprising one or more needles adapted to act in said slot or slots, means for rotating said holder, driving mechanism, clutching mechanism whereby said driving mechanism is engaged whereby to said-means, and automatically operating means for said mechanism.

1l.- In a sewing machine, a revoluble holder adapted for clamping hooks and eyes 0n a support, means for revolving said disengaging clutching holder, driving mechanism, a clutch for connecting said mechanism and means, automatically operating mechanism for disengaging said clutch, means for restraining said mechanism last named, and means carried by said holder for tripping said last named means and releasing said last named mechanism.

1Q. In a sewing machine, a base, a circular holder having seats therein for holding articles to be operated upon, a disk for holding articles in said seats, said holder having one or more circular slots therein, an arbor whereby said holder is journaled, spring pressed blocks movable radially to said arbor whereby t-he periphery of said holder is engaged, and sewing mechanism comprising one or more needles adapted to act through said slot or slots,

13. In a sewing machine, a revoluble holder having one or more circular slots therein, sewing mechanism comprising one or' more needles adapted to act in said slot or slots, means for revolving said holder and reciprocating said needles in unison, driving mechanism, a clutching device for engaging said means and driving mechanism, and mechanism comprising a lever whereby the action of said clutching mechanism is controlled.

In witness whereof I have hereunto set my name this 15th day of February, A. D. 1911, in the presence of the subscribing witnesses.

WILLIAM G. DUN HAM.

Witnesses:

Jos. G. DENNY, J r., JOHN LANDENBERGER.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents, Washington, ZD. G. 

